대한치과교정학회지 (The korean journal of orthodontics)
- 제23권2호
- /
- Pages.147-163
- /
- 1993
- /
- 2234-7518(pISSN)
- /
- 2005-372X(eISSN)
재생방법에 따른 교정용 브라켓의 세포독성에 관한 실험적 연구
AN EXPERIMENTAL STUDY ON THE CYTOTOXICITY OF RECYCLED BRACKETS
- Lim, Young-Kyu (Department of Orthodontics, College of Dentistry, Seoul National University) ;
- Yang, Won-Sik (Department of Orthodontics, College of Dentistry, Seoul National University)
- 발행 : 1993.06.01
초록
The purpose of this stuy was to evaluated the cytotoxicity of brackets which were recycled thermally or chemically. New brackets and used brackets which had been in mouth for at least 2years were used as samples and human gingival cell culture and agar overlay technique was used to evaluate the cytotoxicity. From the experiment the following results were obtained : 1. New brackets in the as received state showed mild cytotoxicity. 2. Thermally recycled brackets except the used bracket not electropolished showed moderate cytotoxicity and among them new brackets showed greater cytotoxicity than used ones. 3. Used brackets which were thermally recycled without electropolishing showed mild cytotoxicity. 4. Among thermally recycled brackets, electropolished brackets showed greater cytotoxicity than not electro-polished ones. 5. Chemically recycled brackets showed moderate cytotoxicity, and among them, new brackets appeared to be more cytotoxic than used ones.